DE102021127685A1 - Device for locking a bayonet catch - Google Patents

Abstract

The invention relates to a device (10) for locking a bayonet catch, the device (10) having a first connection partner (12) with at least one coupling projection (16) for locking the connection and a second connection partner (14) with at least one coupling channel (18). has, wherein the at least one coupling projection (16) and the coupling channel (18) form a bayonet lock, wherein the at least one coupling projection (16) by means of a movement along a longitudinal axis (20) of the second connection partner (14) and a subsequent rotation into a first Circumferentially (46) around the longitudinal axis (20) can be inserted into the at least one coupling channel (18), wherein the first connection partner (12) has at least one first securing partner (32) and the second connection partner (14) has at least one second securing partner (34) wherein the at least one first securing partner (32) and the at least one second securing partner (34) are designed to arrest a rotation in a second circumferential direction (48) opposite to the first circumferential direction (46) if the at least one coupling projection (16) is connected by means the movement along the longitudinal axis (20) and the rotation in the first circumferential direction (46) is introduced into the at least one coupling channel (18). The invention creates an improved device (10) that allows simplified assembly and is inexpensive.

Description

The invention relates to a device for locking a bayonet catch.

Fluid lines are used to convey fluids in devices such as B. to guide vehicles between different positions. When assembling the devices, several fluid lines can be combined to form a common fluid line. To connect the fluid lines, the end pieces of the fluid lines are connected to coupling pieces. The couplers can be attached to connectors with which the fluid lines can be connected to one another in a fluid-communicating manner.

It's over DE 10 2020 105 395 A1 known to attach the coupling pieces by means of a bayonet catch on the connector. In this way, the fluid lines can be quickly coupled.

In order to secure the connection between the coupling piece and the connecting piece, the coupling piece and the connecting piece can be welded together. For this purpose, a welding ring can be arranged inside the connecting piece.

The object of the invention is to provide an improved device that allows simplified assembly and is inexpensive.

Main features of the invention are set out in the characterizing part of claim 1. Configurations are the subject of claims 2 to 10.

In a device for locking a bayonet catch, the device having a first connection partner with at least one coupling projection for locking the connection and a second connection partner with at least one coupling channel, the at least one coupling projection and the coupling channel forming a bayonet catch, the at least one coupling projection using a movement along a longitudinal axis of the second connection partner and a subsequent rotation in a first circumferential direction about the longitudinal axis can be introduced into the at least one coupling channel, the invention provides that the first connection partner has at least one first securing partner and the second connection partner has at least one second securing partner, wherein the at least one first securing partner and the at least one second securing partner are designed to lock a rotation in a second circumferential direction opposite to the first circumferential direction if the at least one coupling projection moves into the at least one coupling channel by means of the movement along the longitudinal axis and the rotation in the first circumferential direction is introduced.

The invention provides a quick coupling between the first connection partner and the second connection partner, which is secured in a connected state by the at least one first securing partner and the at least one second securing partner. The connection between the first connection partner and the second connection partner cannot be released without the at least one first security partner and the at least one second security partner being disconnected from one another. The first connection partner and the second connection partner are connected to one another by means of a bayonet lock. The at least one coupling projection of the first connection partner and the at least one coupling channel of the second connection partner are coupled to one another by a plug-and-turn movement. For this purpose, the at least one coupling channel can have a first channel section, which extends along a longitudinal axis of the second connection partner, and a second channel section, which extends at least partially around the longitudinal axis. The first channel section and the second channel section are connected to one another via a corner. The at least one coupling projection can analogously have a first projection section and a second projection section. The first boss portion may extend parallel to the longitudinal axis and the second boss portion may extend about the longitudinal axis, with the first and second boss portions being connected to each other at a corner. The at least one coupling projection is then initially inserted into the first channel section along the longitudinal axis of the second connection partner. At the corner, the at least one coupling projection can be introduced into the second channel section by rotating it about the longitudinal axis of the second connection partner in a first circumferential direction about the longitudinal axis. As soon as the at least one coupling projection reaches its end position in the at least one coupling channel, the first securing partner on the first connection partner and the second securing partner on the second connection partner interact with one another. In doing so, they lock a rotation of the at least one coupling projection in a second circumferential direction, which is opposite to the first circumferential direction. The at least one coupling projection can therefore not be moved out of the at least one coupling channel without the locking being released by the first and second securing partners. The device can have a large number of coupling projections. Furthermore, the device then has a number of coupling channels corresponding to the number of coupling projections. For example, the device may have four docking protrusions and four docking channels. The coupling between the first and second connection partners can thus be locked in a simple manner. It is not necessary to weld the coupling. This means that no cost-intensive welding device is required. Furthermore, the tolerances of the first and second connection partners can be reduced, so that the coupling can be brought about with less effort. The invention thus creates an improved device that allows simplified assembly and is inexpensive.

According to one example, the at least one first securing partner and the at least one second securing partner can form an undercut in the second circumferential direction when the at least one coupling projection is inserted into the at least one coupling channel by moving along the longitudinal axis and rotating in the first circumferential direction.

As soon as the at least one coupling projection is coupled to the at least one coupling channel, the first securing partner and the second securing partner can abut one another via the undercut. In the second circumferential direction, the first and second securing partners are then connected to one another via a form fit.

According to a further example, the at least one first securing partner and the at least one second securing partner can form a latching connection when the at least one coupling projection is inserted into the at least one coupling channel by means of the movement along the longitudinal axis and the rotation in the first circumferential direction.

With the snap-in connection, an acoustic signal is emitted when snapping in, with which the locking can be indicated to a user. This further increases safety when assembling the device. The at least one first securing partner can have a latching lug, for example.

In a further example, the at least one first securing partner can have a latching lever and the at least one second securing partner can have a latching lug.

In this example, the at least one first securing partner can be tightened when the at least one coupling projection is coupled to the at least one coupling channel. The latching lever can cross the latching lug when the at least one coupling projection is inserted into the at least one coupling channel. Upon completion of the coupling between the at least one coupling projection and the at least one coupling channel, the latching lever can be released and snap into place on the latching lug. For this purpose, viewed along the first circumferential direction, a recess can be provided on the at least one coupling channel behind the latching lug, into which the latching lever is moved by the pretension after the latching lever has overcome the latching lug.

Furthermore, the at least one first securing partner can, for example, be arranged separately from the at least one coupling projection on the first connection partner.

The locking function can thus be separated from the coupling function on the first connection partner. The first channel section of the at least one coupling channel can then in the circumferential direction z. B. be wider than the width of the at least one coupling projection in the circumferential direction. The width of the first channel section can, for. B. extend so far that a first securing partner, which is associated with the at least one coupling projection and is arranged separately from the coupling projection, can also be inserted into the first channel section. Alternatively, the first channel section can have an intermediate wall that extends parallel to the longitudinal axis. The coupling projection can be inserted on one side of the partition and the first securing partner on the other side of the partition.

According to one example, the at least one first securing partner can be arranged on the at least one coupling projection.

The at least one first securing partner and the at least one coupling projection are thus directly connected to one another. They can then be made in one piece. The stability of the first belay partner can also be increased in this way.

According to a further example, the first securing partner can be arranged at a rear end portion of the coupling projection in the first circumferential direction.

When attempting to release the locked coupling between the first connection partner and the second connection partner, a Compressive force on the first securing partner urging the first securing partner against the docking tab. This means that the first belay partner has increased stability.

According to one example, the at least one second backup partner can be arranged on the at least one coupling channel.

In this way, locking between the first and second securing partners can be carried out in a simple and secure manner. A separate channel for the first backup partner is therefore not necessary. Further, the first and second backup partners are protected by the coupling channel when locking the coupling. Accidental release of the lock is thus avoided.

According to another example, the at least one second security partner can be arranged separately from the at least one coupling channel on the second connection partner.

In this case, a separate channel can be provided for the first security partner, on which the second security partner is then arranged. Alternatively, the first securing partner and the second securing partner can interact with one another on an outer surface of the device when the at least one coupling projection is inserted into the at least one coupling channel by means of the movement along the longitudinal axis and the rotation in the first circumferential direction.

In a further example, the first connection partner can have a coupling piece for a fluid line and the second connection partner can have a connection piece for fluid lines.

The fluid lines can be used in a vehicle to z. B. to connect different components of a cooling fluid circuit with each other in a fluid-communicating manner.

• 1 eine schematische Darstellung der Vorrichtung in einer Explosionsansicht;
• 2a, b eine schematische Darstellung der Vorrichtung;
• 3 eine schematische Schnittdarstellung der Vorrichtung;
• 4a-d eine schematische Darstellung der Abfolge zum Verbinden der Verbindungspartner;
• 5 eine schematische Darstellung eines alternativen Beispiels des ersten Verbindungspartners; und
• 6a, b eine schematische Darstellung eines weiteren alternativen Beispiels des ersten Verbindungspartners.

Further features, details and advantages of the invention result from the wording of the claims and from the following description of exemplary embodiments with reference to the drawings. Show it:

• 1 a schematic representation of the device in an exploded view;
• 2a, b a schematic representation of the device;
• 3 a schematic sectional view of the device;
• 4a-d a schematic representation of the sequence for connecting the connection partners;
• 5 a schematic representation of an alternative example of the first connection partner; and
• 6a, b a schematic representation of a further alternative example of the first connection partner.

The device for locking a bayonet lock is according to 1 referenced in its entirety by the reference numeral 10. The example in 1 shows an exploded view of the components of the device 10.

The device 10 has a first connection partner 12 and a second connection partner 14 . Furthermore, the device can have a sealing element 22 between the first and second connection partner 12 , 14 .

The first connection partner 12 can be designed as a coupling piece 28 for a fluid line. A first end section of the coupling piece 28 can then be inserted into an opening in the fluid line in order to connect the fluid line to the coupling piece 28 .

The first connection partner 12 has at least one coupling projection 16 which can be arranged on the end section of the coupling piece 28 opposite the first end section. In the example after 1 the first connection partner 12 has four coupling projections 16 which are arranged on the circumference of the first connection partner 12 at the same distance from one another.

In this example, the coupling boss has an L-shape, with a first boss portion 36 extending along the longitudinal axis 20 and a second boss portion 38 extending about the longitudinal axis 20 . The first projection portion 36 and the second projection portion 38 may be connected to each other via a corner.

The second connection partner 14 can have a connector 30 that can be coupled to another connector that is connected to another fluid line. A clip 24 may be provided to secure the coupling between the connector 30 and the other connector.

The second connection partner 14 further has a coupling channel 18 in an inner wall of an opening of the second connection part ners 14 can be arranged. The coupling channel 18 can have a first channel section 40 and a second channel section 42 . The first channel portion 40 may extend parallel to the longitudinal axis 20 and the second channel portion 42 may extend about the longitudinal axis. The two channel sections 40, 42 can be connected to one another via a corner.

The width of the first channel section 40 in the circumferential direction about the longitudinal axis 20 corresponds to the extension of the coupling projection 16 in the circumferential direction about the longitudinal axis 20.

The extent of the second channel section 42 in the circumferential direction about the longitudinal axis 20 corresponds to the extent of the second projection section 38 in the circumferential direction about the longitudinal axis 20. The second channel section 42 can therefore accommodate the second projection section 38.

The at least one coupling projection 16 can therefore be introduced into the coupling channel 18 by means of an insertion movement along the longitudinal axis and a subsequent rotary movement in a first circumferential direction 46 about the longitudinal axis. The coupling between the first connection partner 14 and the second connection partner 16 thus takes place by means of a plug-and-turn movement. The coupling projection 16 and the coupling channel 18 thus form a bayonet lock.

A fluid line connected to the first connection partner 12 or the coupling piece 28 can thus be connected to the connection piece 30 in a fluid-communicating manner.

Furthermore, the first connection partner 12 has at least one first securing partner 32 which is attached to the at least one coupling projection 16 in this example.

The second connection partner 14 has at least one second securing partner 34 which is arranged on the coupling channel 18 in this example.

The first securing partner 32 and the second securing partner 34 interact when the at least one coupling projection 16 is inserted into the at least one coupling channel 18 by means of the movement along the longitudinal axis 20 and the rotation in the first circumferential direction 46 . The two securing partners 32, 34 then cause the coupling between the first connection partner 12 and the second connection partner 14 to be locked. H. in a second circumferential direction 48, is blocked or prevented.

The first connection partner 12 can have just as many first securing partners 32 as coupling projections 16 . A respective first securing partner 32 is then connected to a respective coupling projection 16 .

The interconnected connection partners 12, 14 are in the 2a and 2 B shown.

In 2a a view into an opening of the connector 30 is shown. Another connector, which is connected to another fluid line, can be inserted into this opening. In view off 2a the clip 24 is inserted into a slot 26 of the connector 14.

2 B shows a view of an opening of the coupling piece 28, which is opposite the opening of the connecting piece 30 when the two connection partners 12, 14 are coupled to one another.

The two backup partners 32, 34 are also visible. In this example, the at least one first securing partner 32 and the second securing partner 34 are designed as latching lugs. The first securing partner 32 is arranged on the first projection section 36 on an end section 44 of the coupling projection 16 , the end section 44 being arranged at the rear of the first projection section 36 in the first circumferential direction 46 around the longitudinal axis 20 .

In this example, the two securing partners 32, 34 form an undercut in the second circumferential direction 48. Both securing partners 32, 34 each have a radially running edge. The two edges of the securing partners 32, 34 rest against one another when the at least one coupling projection 16 is inserted into the at least one coupling channel 18 by means of the movement along the longitudinal axis 20 and the rotation in the first circumferential direction 46. They thus form a form fit in the second circumferential direction 48.

The first projection section 36 and thus also the rear end section 44 are in contact with an entry area of the first channel section 42 . In particular, the first securing partner 32 is thus arranged so that it is accessible from the outside, so that the undercut between the first securing partner 32 and the second securing partner 34 can be overcome using a tool in order to release the lock.

In 3 a sectional view of the device is shown, it being possible for a sealing element 22 to be arranged between the connection partners 12, 14 when the two connection partners 12, 14 are coupled. The sealing element 22 is mounted on a receptacle 52 of the first connection partner 14 which is arranged on an inner wall 50 of the coupling piece 28 . In this case, the sealing element 22 projects along the longitudinal direction 20 in part beyond the receptacle 52 . When the first and second connection partners 12 , 14 are coupled, the part of the sealing element 22 which projects out of the receptacle 52 in the longitudinal direction 20 bears against a contact surface 54 of the second connection partner 14 . A gap that may remain between the two connection partners 12, 14 leading to the outside when the two connection partners 12, 14 are coupled is sealed in a fluid-tight manner.

The sections of the first and second connection partners 12, 14 which adjoin the possible gap between the two connection partners 12, 14 therefore have no contact with the fluid flowing through the connection partners 12, 14. These sections can therefore have different material properties than sections of the connection partners 12, 14 that are in contact with the fluid.

In the 4a until 4d the coupling process between the first connection partner 12 and the second connection partner 14 is explained in more detail.

In 4a the two connection partners 12, 14 are separated from each other. The first connection partner 12 and the second connection partner 14 are aligned with one another in such a way that the coupling projections 16 and the first channel sections 40 are aligned with one another parallel to the longitudinal axis 20 .

4b shows a detailed view parallel to the longitudinal axis 20 in the first channel section 40. In this arrangement, the coupling projection 16 can be inserted into the first channel section 40 of the coupling channel 18 by moving the first connection partner 12 parallel to the longitudinal axis. In this case, the securing partners 32, 34 are arranged at a distance from one another and do not interact.

After the coupling projection 16 has been inserted into the first channel section 40, the second projection section 38 can be inserted into the second channel section 42 by rotating the first connection partner 12 in the first circumferential direction 46, as shown in FIG 4c is shown. The securing partners 32, 34 do not interact during insertion since they are spaced further apart. When the first connection partner 12 is rotated, the two securing partners 32, 34 are moved towards one another.

The rotation in the first circumferential direction 46 can continue until the second projection section 38 has been fully inserted into the second channel section 42 . Before the second projection section 38 has been fully inserted into the second channel section 42, the first securing partner 32, which in this example is designed as a latching lug, sweeps over the second securing partner 34.

When the second projection portion 38 has been fully inserted into the second channel portion 42, the first securing partner 32 will snap onto the second securing partner 34 as shown in FIG 4d is shown. In a view along the first circumferential direction 46, an edge of the first securing partner 32 aligned radially to the longitudinal axis 20 undercuts an edge of the second securing partner 34 aligned radially to the longitudinal axis 20. The edges can also have a different alignment.

The bayonet catch formed by the at least one coupling projection 16 and the at least one coupling channel 18 is then locked by the two securing partners 32, 34.

In this example, the first securing partner 32 is arranged on the rear end section 44 of the first projection section 36 and protrudes into the entry area of the first channel section 42.

5 14 illustrates another embodiment of the device 10. In this example, the first securing partners 32 are arranged separate from the coupling projections 16. As shown in FIG. Next, the first securing partners 32 are designed as latching levers.

In the 6a and 6b a third embodiment of the device 10 is shown.

Therein, the first securing partners 32 are designed as latching levers which are connected to the coupling projections 16, as in FIG 6a is shown. The first securing partners 32 project along the second circumferential direction 48 from the rear end section 44 of the first projection section 36 .

According to 6b the first securing partners 32 embodied as latching levers can protrude in the second circumferential direction 48 as an extension of the second projection sections 38 . Next, the first backup partner 32 parallel to the longitudinal Axis 20 extend only along a part of the first projection portion 36. After the coupling projections 16 have been inserted into the first channel sections 40 , the first securing partners 32 are arranged within the coupling channel 18 at a distance from the entry area of the first channel section 40 .

When the bayonet lock is locked, the first securing partners 32 can only be reached from the outside with a tool with increased effort compared to the exemplary embodiments in which they extend into the entrance area. The locking can thus only be released with increased effort, so that the connection security between the first connection partner 12 and the second connection partner 14 is increased.

The invention is not limited to one of the embodiments described above, but can be modified in many ways.

All of the features and advantages resulting from the claims, the description and the drawing, including structural details, spatial arrangements and method steps, can be essential to the invention both on their own and in a wide variety of combinations.

Reference List

10

Device for locking a bayonet catch

12

first connection partner

14

second connection partner

16

coupling tab

18

coupling channel

20

longitudinal axis

22

sealing element

24

bracket

26

slot

28

coupling piece

30

connector

32

first backup partner

34

second backup partner

36

first projection section

38

second projection section

40

first canal section

42

second canal section

44

end section

46

first circumferential direction

48

second circumferential direction

50

inner wall

52

Recording

54

contact surface

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 102020105395 A1 [0003]

Claims (10)

Device for locking a bayonet catch, the device (10) having a first connection partner (12) with at least one coupling projection (16) for locking the connection and a second connection partner (14) with at least one coupling channel (18), the at least one coupling projection (16) and the coupling channel (18) form a bayonet catch, with the at least one coupling projection (16) being moved about the longitudinal axis in a first circumferential direction (46) by means of a movement along a longitudinal axis (20) of the second connection partner (14) and a subsequent rotation (20) can be inserted into the at least one coupling channel (18), characterized in that the first connection partner (12) has at least one first security partner (32) and the second connection partner (14) has at least one second security partner (34), the at least one first securing partner (32) and the at least one second securing partner (34) are designed to arrest a rotation in a second circumferential direction (48) opposite to the first circumferential direction (46) when the at least one coupling projection (16) is moved by means of the movement along the Longitudinal axis (20) and the rotation in the first circumferential direction (46) is introduced into the at least one coupling channel (18). device after claim 1 , characterized in that the at least one first securing partner (32) and the at least one second securing partner (34) form an undercut in the direction of the second circumferential direction (48) when the at least one coupling projection (16) is released by moving along the longitudinal axis (20 ) and the rotation in the first circumferential direction (46) is introduced into the at least one coupling channel (18). device after claim 1 or 2 , characterized in that the at least one first securing partner (32) and the at least one second securing partner (34) form a latching connection when the at least one coupling projection (16) by means of the movement along the longitudinal axis (20) and the rotation in the first circumferential direction (46) is introduced into the at least one coupling channel (18). device after claim 3 , characterized in that the at least one first securing partner (32) has a locking lever and the at least one second securing partner (34) has a locking lug. Device according to one of Claims 1 until 4 , characterized in that the at least one first securing partner (32) is arranged separately from the at least one coupling projection (16) on the first connection partner (12). Device according to one of Claims 1 until 4 , characterized in that the at least one first securing partner (32) is arranged on the at least one coupling projection (16). device after claim 6 , characterized in that the first securing partner (32) is arranged in the first circumferential direction (46) on a rear end portion (44) of the coupling projection (16). Device according to one of Claims 1 until 7 , characterized in that the at least one second securing partner (34) is arranged on the at least one coupling channel (18). Device according to one of Claims 1 until 8th , characterized in that the at least one second security partner (34) is arranged separately from the at least one coupling channel (18) on the second connection partner (14). Device according to one of Claims 1 until 9 , characterized in that the first connection partner (12) has a coupling piece (28) for a fluid line and the second connection partner (14) has a connection piece (30) for fluid lines.

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